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/*
* ============LICENSE_START=======================================================
* Copyright (C) 2022 Nordix Foundation
* ================================================================================
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.cps.ncmp.rest.util;
import java.util.regex.Pattern;
import org.onap.cps.ncmp.rest.exceptions.InvalidTopicException;
public class TopicValidator {
private static final Pattern TOPIC_NAME_PATTERN = Pattern.compile("^[a-zA-Z0-9]([._-](?![._-])|"
+ "[a-zA-Z0-9]){0,120}[a-zA-Z0-9]$");
/**
* Validate kafka topic name pattern.
*
* @param topicName name of the topic to be validated
*
* @throws InvalidTopicException if the topic is not valid
*/
public static void validateTopicName(final String topicName) {
if (!TOPIC_NAME_PATTERN.matcher(topicName).matches()) {
throw new InvalidTopicException("Topic name " + topicName + " is invalid", "invalid topic");
}
}
}
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